Container closure



March 1, 1932,. J. M. HOTHERSALL C'ONTAINER CLOSURE Filed Oct. 18, 1930 INVENT BY A4 ATTO NEY Fatented Mar. 1, 1932 marten STATES PATENT OFFICE JOHN M. HOTHMSALL, OF BROOKLYN, NEW YORK ASSIGNOR- T0 AMERICAN CAN COM- PANY, OF NEW YORK, N. Y., A CORIPOIRAIION OF NEVT JERSEY CONTAINER CLOSURE Application filed October 18, 1930. Serial No. 489,528

This invention relates in general to containers and more particularly to an improved and novel auxiliary closure construction for friction top containers for paint and other materials.

In the shipment of friction top paint containers through the mails trouble has frequently been encountered in the past in that the friction plugs have leaked in transit and caused damage to other articles shipped through the mails. The Post Office Department has therefore established certain rules and specifications which require that the mere frictional engagement between container body and friction plug be augmented by auxiliary closure means which will insure against damage to other parcels.

A principal object of my invention is the provision of an auxiliary closure for a friction top container which is adapted to meet the most stringent tests and requirements of the post office authorities.

Another important object of my invention is the provision of improved means for securing a friction plug'in place upon a filled friction top container to effectively insure against loosening of the plug inshipment and handling.

Still another important object of my invention is the provision of such an auxiliary closure which will be inexpensive to manu facture, easy to apply by the packer and easy to remove by the ultimate consumer.

Numerous other objects of the invention will be apparent as it is better understood from the following description, which, taken in connection with the accompanying drawirgs, discloses a preferred embodiment there- 0 Referring to the drawings: V.

Figure 1 is a perspective View of a preferred embodiment of theinvention;

Fig. 2 is an enlarged detail cross sectional view showing the container, friction closure and auxiliary closure in fully assembled relationship; and

Fig. 3 is a fragmentary perspective view of the container of Fig. 1, showing the auxiliary closure in partially removed condition.

In the preferred embodiment of my inven ed in a well known double seam 13 with a corresponding flange on the top end or friction ring 14:.

The material of the friction ring 14, inwardly of the double seam 13, is bent downwardly parallel with the wall of the body l1, to form a vertical wall part 15, thence inwardly or horizontally at right angles to the part 15 to form an annular horizontal ledge or shoulder 16, thence downwardly, inwardly and upwardly to form a. substantially U- shapedfriction channel 17, having vertical parallel friction plug engaging walls 18 and 19. 7

The friction wall 19 extends upwardly beyond the plane of the horizontal shoulder 16 and terminates in an annular open bead or curl 21, which defines a central filling and dispensing opening in thetop of the container.

This filling opening is closed by means of the conventional type of friction plug or closure 20, which, in the preferred form illustrated, comprises, a flat central panel 22 substantially on a level with the horizontal plane of the rounded shoulder or top edge 23 formed by the double. seam 13, an annular rounded channel part 2-1, a rounded shoulder part 25,

adapted to snugly fit over the bead 21, a U- shaped channel 26 having two friction seat walls 27 and 28 corresponding with and adapted to make tight frictional contact with the friction walls 18 and 19 of the friction ring 14. The outer margin of the friction plug is bent outwardly, downwardly and inwardly to form an openbead or curl 29 havinga rounded top or shoulder 31.

Ordinarily, this friction plug when driven home into the friction ring provides a very tight closure which is not easily dislodged. However, paints, which are of a heavy liquid consistency, by continuous pounding against the inner side of the plug during the motions caused by shipment sometimes manage to loosen the plug so that the paint leaks out over other articles of shipment. In or der to prevent this undesirable result and to keep the frictionplug in tight sealing engagement at all times, I have provided an additional sealing band or ring 32.

This sealing band or ring 32 is preferably stamped or otherwise prepared, substantially in the form shown in Fig. 2, from a flat strip of sheet metal in any well known and suitable manner. It comprises, an inner round-v ed marginal part 33 which is adapted to tightly fit over the shoulder 31 of the friction plug bead 29, a rounded channel part 34, tightly bearing upon the horizontal sl1oul der 16 of the friction ring 14, a substantially vertical annular wall part 35, parallel with and tightly hugging the wall'15 of the friction ring, a rounded top shoulder 36, adapted to overlie the shoulder 23 of the double seam 13, and a depending annular skirt 37, adapted to be crimped against the outer periphery of and under the double seam 13, by means of any ordinary or preferred crlmplng tool. The ends of the sealing ring strip are overlapped at 38 and the outer overlapping end has a tongue extension 39 depending downwardly from the skirt 37 and provided with a perforation 40 to facilitate easy engagement of the tongue by a pry ofi tool.

It will be readily seen that this arrangement of the sealing ring 32 over and around the double seam 13 and over thebead 29 of the friction plug 20 will hold the friction plug securely in place even under the most severe strains incidental to the handling and shipping.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbcfore described being merely a preferred embodiment thereof.

I claim:

1. In a friction top container, a container body, a friction ring secured thereto by a double seam and adapted to provide a filling and dispensing opening, a friction plug adapted to seal said opening, and an auxiliary sealing means arrangeable over said plug and said seam and adapted to securely hold said plug in tight sealing engagement.

2. In a friction top container, a container opening. a friction plug adapted to seal said opening, and an auxiliary sealing means arbody having a flange, a friction ring having a flange interlocked with said body flange to form a double seam, and providing a filling and dispensing opening, a friction plug adapted to frictionally engage said ring to close said opening, and a sealing ring arrangeable over said plug and double seam to securely hold said plug in tight sealing engagement.

4. In a friction top container, a container body having a flange, a friction ring having a flange interlocked with said body flange to form a double seam, and providing a filling and dispensing opening, a friction plug adapted to frictionally engage said ring to close said opening, and a sealing ring with overlapped ends crimped over said plug and double seam to securely hold said plug in tight sealing engagement.

5. In a friction top container, a container body having a flange, a friction ring having a flange interlocked with said body flan go to form a double seam, and providing a filling and dispensing opening, a friction plug adapted to frictionally engage said ring to close said opening, and a sealing ring with overlapped ends crimped over said plug and double seam to securely hold said plug in tight sealing engagement, said sealing ring having a tongue to facilitate removal.

JOHN M. I-IOTHERSALL.

body, a. friction ring secured thereto and rangeable over projecting parts of said body L and said plug and adapted to securely hold said plug in tight sealing engagement.

3. In a friction top container, a container 

